I have been thinking about developing some soil CO2 probes, what I have
come up with so far is these Rhizon soil moisture samplers from Eijekelkamp,
they are like mini suction cups made out of permeable plastic at the bottom
and plastic tubing. These are great as the are dirt cheap about 2 usd each
and they have luer lock fitting so can be linked up with a syringe needle to
a non-evacuated vacutainer to trap the CO2 in KOH.
You would obviously need to test them... As I say for me I am still in the
ideas stage...so it would be interesting to see if they worked.
Just thought you may be interested....
Eijekelkamp Http://www.eijkelKamp.com <Http://www.eijkelKamp.com>
E mail eijekelkamp.com
Dr Rebecca Hood
Soil Science Unit
FAO/IAEA Agriculture and Biotechnology Laboratory,
IAEA Laboratories
A-2444 Seibersdorf
Austria
Tel 00 43 1 2600 28271
Fax 00 43 1 2600 28222
http://www.iaea.org/programmes/nafa <http://www.iaea.org/programmes/nafa>
http://www.fao.org <http://www.fao.org>
Symposium Web site:
http://www.iaea.org/programmes/nafa/d1/mtc/00_it.html
-----Original Message-----
From: Suckow.A [SMTP:[log in to unmask]]
Sent: Thursday, March 09, 2000 11:52 AM
To: [log in to unmask]
Subject: AW: soil CO2
Dear Bjorn
Helmut Dörr from Heidelberg in the late eighties used simple
inverted cup
techniques (for surface concentrations) or stainless steel tubings
(for
depth profiles of soil CO2) and adsorbed the CO2 on sodium hydroxide
solution. Have a look at
Dörr, Helmut, Münnich, Karl Otto (1980):
Carbon-14 and carbon-13 in soil CO2.
Radiocarbon 22 No. 3, pp. 909-918.
Dörr, Helmut, Kromer, Bernd, Levin, Ingeborg, Münnich, Karl Otto,
Volpp,
H.J. (1983):
CO2 and Radon as tracers for atmospheric transport.
Journal of Geophysical Research 8, pp. 1309-1313.
Dörr, Helmut, Münnich, Karl Otto (1986):
Annual variations of the 14C content of soil CO2.
Radiocarbon 28 No. 2A, pp. 338-345.
Dörr, Helmut, Münnich, Karl Otto (1987):
Annual variation in soil respiration in selected areas of the
temperate
zone.
Tellus 39B, pp. 114-121; Stockholm.
Greetings
Axel
Dr. Axel Suckow
Institut für
Geowissenschaftliche Gemeinschaftsaufgaben (GGA);
Joint Geoscientific Research Institute
of the German State Geological Surveys;
Geochronology and Isotope Hydrology (S3);
Stilleweg 2;
30655 Hannover;
Phone: +49 511 6432527;
Fax: +49 511 6433665;
e-mail: [log in to unmask]
-----Ursprüngliche Nachricht-----
Von: Bjrn Buchardt [mailto:[log in to unmask]]
Gesendet am: Donnerstag, 9. März 2000 12:37
An: [log in to unmask]
Betreff: Re: soil CO2
Dear listmembers
We are initiating a program of measuring 13C in soil CO2 and are
looking for an easy and inexpensive method of
collecting/concentrating CO2 from soil gas in the field. If some of
you have experiences we would be glad to here about it.
Thanks in advance
Bjorn Buchardt
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